SC4215
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: V = VIN. V = 1.6V to 5.5V, VO = VIN -0.5V, and IO = 10µA to 2A.
Values in bold applEyNover theINfull operating temperature range.
Parameter
VO (Cont.)
Symbol
Test Conditions
Min
2.2
Typ
Max
Units
IO = 2A, VIN = VO + 0.5V
IO = 2A, VIN = VO + 0.6V
VIN = VO + 0.5V
300
500
600
10
mV
Dropout Voltage(1)(2)
Minimum Load Current(3)
Current Limit
IO
1
3
µA
A
ICL
4.5
ADJ
Reference Voltage(1)
VREF
VIN = 3.3V, VADJ = VOUT, IO = 10mA
VADJ = VREF
0.792
0.8
0.808
0.816
200
V
0.784
Adjust Pin Current(4)
Adjust Pin Threshold(5)
EN
IADJ
80
nA
V
VTH(ADJ)
0.05
1.6
0.16
0.40
Enable Pin Current
Enable Pin Threshold
IEN
VIH
VIL
VEN = 0V, VIN = 3.3V
VIN = 3.3V
1.5
10
µA
V
VIN = 3.3V
0.4
Over Temperature Protection
High Trip level
THI
THYST
160
10
°C
°C
Hysteresis
Notes:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Defined as the input to output differential at which the output voltage drops to 1.5% below the value
measured at a differential of 0.8V.
(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this
requirement. Adjustable versions only.
(4) Guaranteed by design.
(5) When VADJ exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the error
amplifier and connects VADJ instead.
2006 Semtech Corp.
3
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SEMTECH [ SEMTECH CORPORATION ]
